Esterbrook
J Series (LJ or SJ model)
Fountain Pen
Filling System
Lever Filler
Condition
Very Good vintage condition with vibrant chatoyancy in the celluloid and minor wear
Estimated Value
$50 - $150 depending on sac condition and specific nib model
Era
Vintage 1940s-1950s
Pen Specifications
Pen Type
Fountain Pen
Filling System
Lever Filler
Body Material
Celluloid / Plastic
Trim Material
Chrome-Plated / Nickel-Plated
Color / Pattern
Blue Pearl
Cap Type
Screw Cap
Clip Design
Classic Esterbrook block lettering clip with dual-line engraving
Barrel Shape
Cigar-Shaped / Tapered
Nib Details
Nib Material
Steel
Nib Size
Medium
Nib Type
Interchangeable Screw-In Nib Unit (Renew-Point)
Nib Condition
Good, clean stainless steel Esterbrook Renew-Point nib unit
Dimensions
Size / Dimensions
Approx. 5 inches capped
Weight Estimate
Lightweight, around 15-20 grams
Heritage & Origin
Era / Period
Vintage 1940s-1950s
Country of Origin
USA
Rarity
Common
Condition & Value
Overall Condition
Very Good vintage condition with vibrant chatoyancy in the celluloid and minor wear
Filling System Condition
Likely requires a new sac replacement for full functionality as rubber sacs degrade over decades
Estimated Value
$50 - $150 depending on sac condition and specific nib model
Special Features
Esterbrook's famous interchangeable 'Renew-Point' nib system allowing users to easily unscrew and swap out different nib styles
Ink Recommendations
Standard dye-based fountain pen inks such as Waterman Serenity Blue or Parker Quink
Care Recommendations
Flush with cool water, avoid harsh solvents on celluloid, replace the internal latex ink sac if currently non-functional
Interesting Facts
Esterbrook was historically one of the largest pen nib manufacturers in the world before successfully transitioning to fountain pens with their iconic interchangeable nib system.
Overall Assessment
A quintessential mid-century American vintage workhorse pen featuring a striking blue pearl finish and the highly practical Esterbrook interchangeable nib design.